# Mathematician:Robert of Chester

## Mathematician

English Arabist of the $12$th century who translated several books from Arabic to Latin.

Hence appears to be the first to introduce the Arabic numerals to Europe.

His most immediate legacy was his use of the word sine (as sinus, meaning bay or fold) for the word that in the original Indian meant bow or chord.

Some credit Gerard of Cremona for this, but Gerard now appears to have followed Robert.

English

## History

• Born: c. 1100 in Chester, England
• Died: unknown